EP 0329923 A1 19890830 - Single-step catalytic process for the direct conversion of polysaccharides to polyhydric alcohols.

Title (en)

Single-step catalytic process for the direct conversion of polysaccharides to polyhydric alcohols.

Title (de)

Katalytisches Einstufenverfahren zur direkten Umwandlung von Polysacchariden in mehrwertige Alkohole.

Title (fr)

Procédé catalytique en une étape de conversion directe de polysaccharides en alcools polyhydroxylés.

Publication

EP 0329923 A1 19890830 (EN)

Application

EP 88870023 A 19880222

Priority

EP 88870023 A 19880222

Abstract (en)

Single-step process for the conversion of polysaccharides to polyhydric alcohols by hydrogenation at high pressure and temperature in the presence of a catalyst consisting of (i) a supported metal selected from ruthenium, copper, nickel, cobalt and their mixtures, said metal being highly dispersed on the support so as to be capable of adsorbing more than 0.58 molecules of CO per atom of metal, and (ii) a solid having acidic functions, which may or may not be identical to the support, said solid having sufficient acid functions so that the rate constant of hydrolysis of sucrose on the catalyst is greater than 70% of the rate constant of hydrogenation of glucose on the catalyst. The process gives substantially pure polyhydric alcohols in a single step.

IPC 1-7

C07C 29/14; C07C 31/26

IPC 8 full level

B01J 29/06 (2006.01); B01J 29/12 (2006.01); B01J 29/22 (2006.01); B01J 29/44 (2006.01); C07C 27/00 (2006.01); C07C 29/132 (2006.01); C07C 29/136 (2006.01); C07C 31/18 (2006.01); C07C 31/26 (2006.01); C07C 67/00 (2006.01)

CPC (source: EP US)

C07C 29/132 (2013.01 - EP US); C07C 31/26 (2013.01 - EP US)

Citation (search report)

[X] US 2609399 A 19520902 - HENDRIK KOOL CORNELIS MARTINUS, et al
[X] BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE, July/August 1981, pages II-288-II-292, part II, Paris, FR; J. SABADIE et al.: "Hydrogénolyse catalytique d'oligosaccharides"

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0329923 A1 19890830; EP 0329923 B1 19930421; AT E88453 T1 19930515; DE 3880477 D1 19930527; DE 3880477 T2 19930916; DK 78489 A 19890823; DK 78489 D0 19890221; ES 2054877 T3 19940816; JP H01268653 A 19891026; US 4950812 A 19900821

DOCDB simple family (application)

EP 88870023 A 19880222; AT 88870023 T 19880222; DE 3880477 T 19880222; DK 78489 A 19890221; ES 88870023 T 19880222; JP 3949589 A 19890221; US 31394689 A 19890222